2137505 has 8 divisors (see below), whose sum is σ = 2676672. Its totient is φ = 1635568.

The previous prime is 2137493. The next prime is 2137507. The reversal of 2137505 is 5057312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2137505 - 2⁴ = 2137489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2137507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9179 + ... + 9408.

It is an arithmetic number, because the mean of its divisors is an integer number (334584).

2^2137505 is an apocalyptic number.

It is an amenable number.

2137505 is a deficient number, since it is larger than the sum of its proper divisors (539167).

2137505 is a wasteful number, since it uses less digits than its factorization.

2137505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18615.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 2137505 is about 1462.0208616843. The cubic root of 2137505 is about 128.8157737263.

The spelling of 2137505 in words is "two million, one hundred thirty-seven thousand, five hundred five".